Easter egg hunts in Auckland today should be planned for the morning, before showers strike around lunchtime, the MetService says.
Meteorologist Chelsea Glue said a front will move into the central North Island today, with showers becoming common further north.
"It's pretty weak so by the time it gets [to Auckland] there won't be a whole lot of rain left with it, but there will be a few showers," she said.
Temperatures for most of the North Island are expected to remain relatively warm, with some in the early to mid-20s.
Cooler conditions are forecast for the South Island and for Wellington, with people in the capital told to brace for northerly winds which will turn southwest during the day.